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Abstract
The present investigation covered a detailed studies on : A- Phytochemical studies of some plant oils and Bacteria, B. thuringeinsis.
B- Toxicological studies.
1. Rearing & breeding of the fly, chrysomyia albiceps.
2. Extraction and identification of the selected plant extracts.
3. Evaluation of the plant extracts and the bacterial agents.
4. Study of the effect of treatments on some biological activities of the fly.
5. Study of the biochemical and histopathological deterioration on the fly.
In this respect six wild plants were originally collected from various localities in Sharkia governorate. They were classified into two groups according to their own constituents (volatile and fixed oils) the following points were summarized as follows:
A- Phytochemical studies:
1- Volatile oils : Four volatile oils were extracted using steam distillation technique. Preliminary insecticidal screening showed that cinnamon, (C. zeylanicum) and thyme (T. vulgaris) volatile oils gave the highest toxicological activities against the larvae of the blow fly, chrysomyia albiceps. They were subjected to further analytical investigations for identificating their chemical and structural formula using GC/MS (70 cv). The results indicated that methoxy cinnamaldhyde and its derivatives compounds are the major constituent of cinnamon representing 28.12% of total, while the major compounds in thyme oil are cymene ortho and its derivatives compounds representing 40.29% of total.
2- Fixed oils:
The preliminary toxicity test showed that the fixed oil of ginger, Zingiber officinal have the superior action against chrysomyia albiceps.